344455221242121 has 16 divisors (see below), whose sum is σ = 501031665650880. Its totient is φ = 208758286272320.

The previous prime is 344455221242023. The next prime is 344455221242131. The reversal of 344455221242121 is 121242122554443.

It is a cyclic number.

It is not a de Polignac number, because 344455221242121 - 2¹⁴ = 344455221225737 is a prime.

It is a super-2 number, since 2×344455221242121² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (344455221242131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58494906 + ... + 64113683.

It is an arithmetic number, because the mean of its divisors is an integer number (31314479103180).

Almost surely, 2^{344455221242121} is an apocalyptic number.

It is an amenable number.

344455221242121 is a deficient number, since it is larger than the sum of its proper divisors (156576444408759).

344455221242121 is a wasteful number, since it uses less digits than its factorization.

344455221242121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122693736.

The product of its digits is 614400, while the sum is 42.

Adding to 344455221242121 its reverse (121242122554443), we get a palindrome (465697343796564).

The spelling of 344455221242121 in words is "three hundred forty-four trillion, four hundred fifty-five billion, two hundred twenty-one million, two hundred forty-two thousand, one hundred twenty-one".